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KVM: VMX: Move vm entry failure handling to the exit handler 

This will help moving the main loop to subarch independent code.

Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Avi Kivity 2007-09-10 17:27:03 +03:00
parent 2e3e5882dc
commit 29bd8a7808
1 changed files with 10 additions and 9 deletions
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19
drivers/kvm/vmx.c
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@ -43,6 +43,7 @@ struct vmcs {
struct vcpu_vmx {
struct kvm_vcpu vcpu;
int launched;
u8 fail;
struct kvm_msr_entry *guest_msrs;
struct kvm_msr_entry *host_msrs;
int nmsrs;
@ -2099,6 +2100,14 @@ static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
{
u32 vectoring_info = vmcs_read32(IDT_VECTORING_INFO_FIELD);
u32 exit_reason = vmcs_read32(VM_EXIT_REASON);
struct vcpu_vmx *vmx = to_vmx(vcpu);
if (unlikely(vmx->fail)) {
kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
kvm_run->fail_entry.hardware_entry_failure_reason
= vmcs_read32(VM_INSTRUCTION_ERROR);
return 0;
}
if ( (vectoring_info & VECTORING_INFO_VALID_MASK) &&
exit_reason != EXIT_REASON_EXCEPTION_NMI )
@ -2208,7 +2217,6 @@ static void vmx_intr_assist(struct kvm_vcpu *vcpu)
static int vmx_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
u8 fail;
int r;
if (unlikely(vcpu->mp_state == VCPU_MP_STATE_SIPI_RECEIVED)) {
@ -2352,7 +2360,7 @@ static int vmx_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
"pop %%ecx; popa \n\t"
#endif
"setbe %0 \n\t"
: "=q" (fail)
: "=q" (vmx->fail)
: "r"(vmx->launched), "d"((unsigned long)HOST_RSP),
"c"(vcpu),
[rax]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RAX])),
@ -2387,13 +2395,6 @@ static int vmx_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
preempt_enable();
if (unlikely(fail)) {
kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
kvm_run->fail_entry.hardware_entry_failure_reason
= vmcs_read32(VM_INSTRUCTION_ERROR);
r = 0;
goto out;
}
/*
* Profile KVM exit RIPs:
*/